Eye construction for double bar bumpers



P 1936- H. s. JANDUS ET AL 2,037,794

EYE CONSTRUCTION FOR DOUBLE BAR BUMPERS Filed April 25, 1951 i ii/l 671561? J rfazzdzm'.

Patented Apr. 21, 1936 i UNITED STATES PATENT OFFICE EYE CONSTRUCTION FOR DOUBLE BAR BUMPERS Herbert S. Jandus and Norman Y. Kristensen, Detroit, Mich., assignors to General Spring Bumper Corporation, Detroit, Mich., a corporation of Michigan Application April 25, 1931, Serial No. 532,850

14 Claims. (01. 293-55) This invention has to do with bumpers, particu- Referring now more particularly to the drawlarly of the character embodying a pair of iming, wherein the same parts are indicated pact bars, and has for its principal object to prothroughout by the same reference characters, the vide a connection between the pair of impact bars upper and lower imp-act bars I and 2 respectively and a single back bar. are provided with eyes 3 and 4 respectively. The 5 A further object of the invention resides in the eyes 3 and 4 are complementarily rabbeted at 5 provision of a special bolt construction for cenand 6, the upper and lower walls I and. 8 of which tering the end bolts for holding the eyes of the 'reare adapted to engage the upper and lower edges spective bars in proper relationship. 9 and 10 of the neck ll between the eye l2 and 10 Another important object of the invention is to the main portion l3 of the back bar. 10 provide a double bar bumper, the impact bars of The various eyes are assembled by holding the which are spaced very closely together. eyes 3 and 4 apart sufiiciently to permit the back In carrying out the invention, the impact bars bar eye l2 to pass axially into either eye of the have eyes whose adjacent portions are formed to front bars, whereupon the other front bar eye is provide an opening through which the eye of the positioned as shown in the drawing. The shank 15 rear bar may be inserted into the impact bar eyes. of the bolt l4 passes through the eye l2 and is A bolt passes through the back bar eye, with its provided with a circumferential flange l5 adapted head resting on the top of the upper impact bar, a to substantially fit within the upper eye 3 to thereshouldered element being app e t the pp by center the shank. The head l6 rests on the end of the bolt to engage the bottom of the lower top of the eye 3. A centering element I! having a 20 impact bar and tightly hold the respective eyes in collar l9 performs the same function with reinterlocked relationship. Centering means enspect to the bottom of the lower eye 4 that the gaging the interior walls of the respective eyes of portions l5 and I6 accomplish with respect to the the front bars serve to properly center the bolt upper part of the eye 3, and is firmly held in posishank therein. Y tion by the nut I8. 25

This construction permits of the front bars With the construction thus afforded, the likebein l at d v ry close together and yet avoids lihood of twisting of the various eyes is obviated, the danger of interengagement of said bars by since ample bearing surface between the back bar reason'of the peculiar construction of the end eye l2 and the respective front bar eyes is propart of the back bar, which will be more parvided. The rabbets 5 and 6 are made of sufficient 30 ti la y brought Out as the ptio p width to permit of slight pivotal movement beceeds. tween .the back bar and the impact bar, but are Further objects and advantages of the invenpreferably narrower than the diameter of the tion will be apparent upon reference to the folback bar eye so that the latter must be inserted lowing disclosure. into the front bar eyes or nested within the same 35 The invention (in a preferred form) is illusby relative axial movement. The centering portrated in the drawing and hereinafter more fully tions l5 and I9 at the opposite ends of the shank described. of the bolt I4 provide additional reinforcement On the drawing: against twisting of the eyes. The bolt head is 40 Figure 1 is a fragmentary plan view of an end preferably integral with the shank, 40 of a, bumper formed in accordance with the pres- It will be clear from the foregoing that the ent invention, one pa t being broken Y- bumper end construction provided in accordance Figure 2 is a fregmetltery velitica'l w; Partly with this invention is extremely simple and yet in sectio and partly elevetwn, P P the is fully sturdy for the use to which it is to be manner in which the various bars constituting the put The assembly provides a very neat appear 45 bumper arejoinei t 1 1 f ance, moreover, and this construction afiords ad- Flgure 3 1S a fragmen My 6 1on9 0 vantageous use of a pair of impact bars which, the same while being spaced apart, nevertheless are sum- Figure 4 is another vertical sectional view showing another detail of the invention, certain ho n elevation; taken in lane ga fn r fi fiigurg 1 p bar to cushion the same. The back bar con- Figure 5 is ahorizontal sectional view taken ap- Struction may be in the form of unitary ba proximately in the plane indicated 'by the line j l to b nt ba s, or may be made in V-V of Figure 2. parts having overlapped portions clamped to the 5 ciently close together to function as well as a single bar bumper, while requiring only one back front bars or having individual separated ends connected to the front bars.

We are aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention, and we, therefore, do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

We claim as our invention: a n V 1. Bumper construction comprising a pair of impact bars having substantially registering eyes provided with juxtaposed slots, a back bar passing through said slots and having an eye in said eyes, one of the vertically spaced ends of said back bar eye being surrounded by one of said impact bar eyes beyond the outer limit of the respective slot, and means for holding said eyes in assembled relation.

2. Bumper construction comprising a pair of impact bars having substantially registering eyes provided with juxtaposed slots, 2. back bar passing through said slots and having an eye in said eyes, the upper and lower ends of the back bar eye being surrounded by said impact bar eyes beyond the outer termination of said slots, and means for holding said eyes in assembled relation.

3. Impact bar eye structure provided with a longitudinal slot, and a back bar extending through said slotand having an eye disposed in said structure and of a length to extend beyond the outer limits of said slot.

4. Impact bar eye structure provided with a longitudinal slot, and a back bar extending through said slot and having an eye disposed in said structure and. of a length to extend beyond the outer limits of said slot, said slot being Spaced inwardly from the end of the bar structure, and the bar structure intimately embracing the eye of said back bar beyond the outer limits of said slot.

5. Bumper construction including impact bar eyes having juxtaposed slots spaced from the ends of the bars, a back bar passing through said slots and having a portion disposed in said eyes, said portion being longer than the distance between the remote walls of said slots and extending therebeyond into intimate contact with said impact bar eyes, and means for holding said eyes and portion in assembled relation.

6. Bumper construction comprising a pair of impact bars having spaced substantially registering eyes, a back bar having an eye registering with and bridging the space between the impact bar eyes, said impact bar eyes together providing a slot, said back bar adjacent the back bar eye being of less height than said eye and extending through said slot in engagement with the upper and lower limits of said slot, and means for maintaining the parts thus engaged, the portions of the back bar eye above and below the limits of said slot being in engagement substantially throughout their respective peripheries with the respective impact bar eyes, whereby all of said eyes are held in coaxial relation and twisting between said eyes is prevented.

7. Bumperconstruction comprising a pair of impact bars having spaced substantially registering eyes, a back bar having an eye registering with and bridging the space between the impact bar eyes, said impact bar eyes together proyiding a slot, said back bar adjacent the back bar eye being of less height than said eye and extending through said slot in engagement with the upper and lower limits of said slot, and means for maintaining the parts thus engaged, the portions of the back bar eye above and below the limits of said slot being in engagement substantially throughout their respective peripheries with the respective impact bar eyes, whereby all of said eyes are held in coaxial relation and twisting between said eyes is prevented, the reduced portion of the back bar being of greater height than the combined depths of the upper and lower portions of the slot, whereby the impact bar eyes are held in spaced relation to each other.

8. An automobile bumper comprising an impact and back bar structure, said impact bar structure being provided with a terminal enclosure having an opening, said back bar structure having a portion projecting through said opening, said portion engaging the inner surface of said enclosure along a zone which substantially completely frames said opening, whereby entry of foreign matter into said enclosure through said opening is prevented, and means for holding said enclosure and portion in assembly.

9. An automobile bumper comprising an impact and back bar structure, said impact bar structure being provided with a terminal enclosure having an opening, said back bar structure having a portion projecting through said opening, said portion engaging the inner surface of said enclosure along a zone which substantially completely frames said opening, whereby entry of foreign matter into said enclosure through said opening is prevented, and means for holding said enclosure and portion in assembly, said portion being arcuate to slide and swing within said enclosure and being of an extent to at all times engage the enclosure at said zone.

10. An automobile bumper comprising an impact and back bar structure, said impact bar structure being provided with a terminal enclosure having an opening, said back bar structure having a portion projecting through said opening, said portion engaging the inner surface of said enclosure along a zone which substantially completely frames said opening, whereby entry said portion and slidably engaging said walls to guide said portion in its sliding and swinging movement within said enclosure.

11. An automobile bumper comprising an impact and back bar structure, said impact bar structure being provided with a terminal enclosure having an opening, said back bar structure having a portion projecting through said opening, said portion engaging the inner surface of said enclosure along a zone which substantially completely frames said opening, whereby entry of foreign matter into said enclosure through said opening is prevented, and means for holding-said enclosure and portion in assembly, said portion being arcuate'to slide and swing within said enclosure and being of an extent to at all times engage the enclosure at said zone, said opening having. a wall parallel to the direction of sliding and swinging movement and said back bar adjacent said portion having a notch in which said wall is received, said wall engaging the bottom of 75 the notch to guide said portion in its sliding and swinging movement within said enclosure.

12. An automobile bumper comprising an impact and back bar structure, said impact bar structure being provided with a terminal enclosure having an opening, said back bar structure having a portion projecting through said opening, said portion engaging the inner surface of said enclosure along a zone which substantially completely frames said opening, whereby entry of foreign matter into said enclosure through said opening is prevented, and means for holding said enclosure and portion in assembly, said portion being arcuate to slide andswing within said enclosure and being of an extent to at all times engage the enclosure at said zone, said opening having upper and lower walls parallel to the direction of sliding and swinging movement and said back bar structure adjacent said portion having upper and lower notches in which the respective walls are received, said walls engaging the bottoms of the notches to guide said portion in its sliding and swinging movement within said enclosure.

13. A bumper for automobiles and the like comprising a front impact structure provided with a terminal eye having an opening of less height than the eye, and a side strip portion of less height than the front structure and projecting through said opening into and slidable and swingable pivotally within the eye, said eye including cylinder sections above and below the eye opening for engagement with the upper and lower edges of the strip portion extending through said opening, said portion being formed with cylindrical ends extending within said eye respectively above and below said edges and in engagement throughout their outer peripheries with the adjacent inner surfaces of the eye above and below said opening.

14. In a bumper end construction, a plurality of impact bars each having an eye on the end thereof, a rear bar having an eye on the end thereof, the eye on the rear bar being telescoped with eyes on the impact bars, spacing means between the ends of the eye on the rear bar and engaged by the adjacent edges of the eyes on the impact bars, and means for securing said eyes together.

HERBERT S. JANDUS. NORMAN Y. KRISTENSEN. 

